GEOM_ecto: GEOM_ecto

In mrke/NicheMapR: R implementation of Niche Mapper software for biophysical modelling

GEOM_ecto

Description

R version of Fortran GEOM.f (ectotherm model) for calculating biophysically relevant object surfaces, volumes and linear dimensions.

Usage

GEOM_ecto(
  AMASS = 0.04,
  GEOMETRY = 3,
  ORIENT = 0,
  SHP = c(1, 3, 2/3),
  CUSTOMGEOM = c(10.4713, 0.688, 0.425, 0.85, 3.798, 0.683, 0.694, 0.743),
  ANDENS = 1000,
  SKINW = 0.001,
  SKINT = 0,
  RINSUL = 0,
  PTCOND = 0.1,
  PMOUTH = 0.05,
  PANT = 1
)

Arguments

AMASS	body mass, kg
GEOMETRY	organism shape, 0-5, 0=plate, 1=cyl, 2=ellips, 3=lizard (desert iguana), 4=frog (leopard frog), 5=custom
ORIENT	orientation of shape relevant to shapes 0, 1 & 2, 0 means plate lying flat, cylinder lengthwise, prolate ellipsoid, 1 means plate on edge, cylinder upright, oblate spheroid and ellipsoid
SHP	vector of ratios of dimensions of long to short axes of linear dimensions
CUSTOMGEOM	custom shape coefficients. Operates if shape=5, and consists of 4 pairs of values representing the parameters a and b of a relationship AREA=a*mass^b, where AREA is in cm2 and mass is in g. The first pair are a and b for total surface area, then a and b for ventral area, then for sillhouette area normal to the sun, then sillhouette area perpendicular to the sun
ANDENS	animal density (kg/m3)
SKINW	fraction of total surface area acting as a free water surface (fractional, 0-1)
SKINT	fraction of total surface area in contact with another individual of the same temperature (fractional, 0-1)
RINSUL	depth of insulation (m) (not yet used)
PTCOND	fraction of total surface area in contact with the substrate (fractional, 0-1)
PMOUTH	fraction of total surface area that is 'wet' mouth (fractional, 0-1)
PANT	multiplier on breathing rate, for respiratory water loss via panting (used here to open mouth if > 1)

mrke/NicheMapR documentation built on Jan. 13, 2025, 9:11 p.m.